Designed with a crisp, clear window, the Blizzard Flip-Open Clear Scope Lens Cover from Butler Creek allows for rapid target acquisition at close to medium ranges. This scope lens cover is crafted of optical-grade polymers for optimum clarity and light transmission to aid you during various hunting situations, while silent, spring-loaded operation and an ambidextrous open and close make this cover easy to operate. To maximize protection of your scope lens against extreme weather conditions, this scope lens cover also creates a weather-resistant seal for added reliability.